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zx521

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[求助] AES或DES加密

求一个用C或C++编程实现的DES或AES算法的加密。程序中要有较详细的注解。谢谢各位高手大拿！

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自己不努力，沒人替你堅?�

1楼 2013-03-10 20:12:31

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jjdg

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【答案】应助回帖

感谢参与，应助指数 +1

直接百度或google相应代码，然后自己写个调用不就完了

赞一下

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努力学习！以正当途径！获得需要的知识！

3楼2013-03-11 00:42:11

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fdesheng

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【答案】应助回帖

★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
感谢参与，应助指数 +1
jjdg: 金币+1, 感谢参与 2013-03-11 00:41:33
zx521: 金币+20, ★★★很有帮助, 这个网站不错，谢谢提示 2013-03-11 17:23:58

可以下载miracl库，里面好像有。。。年前用过，不过不是用的DES所以不是很了解，你可以Google或baidu搜一下看看。还有就是还有别的也可以自己搜，具体记不清楚了。

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2楼2013-03-10 22:44:37

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137282855

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【答案】应助回帖

★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
感谢参与，应助指数 +1
zx521: 金币+20, ★有帮助, 嗯，努力找呢 2013-03-11 17:23:01

http://wenku.baidu.com/view/962dfe5a312b3169a551a404.html

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4楼2013-03-11 08:57:49

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bear7788

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【答案】应助回帖

★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
感谢参与，应助指数 +1
zx521: 金币+40, ★★★很有帮助, 能不能带点注释，有点深- -还是谢谢了 2013-03-11 17:25:31

// AES_3.cpp : Defines the entry point for the DLL application.
//

#include "stdafx.h"
#include "AES_3.h"

BOOL APIENTRY DllMain( HANDLE hModule,
                     DWORD  ul_reason_for_call,
                     LPVOID lpReserved
   )
{
switch (ul_reason_for_call)
{
case DLL_PROCESS_ATTACH:
case DLL_THREAD_ATTACH:
case DLL_THREAD_DETACH:
case DLL_PROCESS_DETACH:
break;
}
return TRUE;
}

unsigned char  block1[16] = {    0x04,0x00,0x07,0x00,
                           0x08,0x00,0xde,0x03,
                           0x6e,0x00,0xdc,0x00,
                           0x03,0x07,0x04,0x1e
                  };
unsigned char key1[16]= {
               0x00,0x00,0x00,0x00,
               0x00,0x00,0x00,0x00,
               0x00,0x00,0x00,0x00,
               0x00,0x00,0x00,0x00
               };

static const unsigned char S_box[256] = {
99, 124, 119, 123, 242, 107, 111, 197,  48, 1, 103,  43, 254, 215, 171, 118,
  202, 130, 201, 125, 250,  89,  71, 240, 173, 212, 162, 175, 156, 164, 114, 192,
  183, 253, 147,  38,  54,  63, 247, 204,  52, 165, 229, 241, 113, 216,  49,  21,
4, 199,  35, 195,  24, 150, 5, 154, 7,  18, 128, 226, 235,  39, 178, 117,
9, 131,  44,  26,  27, 110,  90, 160,  82,  59, 214, 179,  41, 227,  47, 132,
83, 209, 0, 237,  32, 252, 177,  91, 106, 203, 190,  57,  74,  76,  88, 207,
  208, 239, 170, 251,  67,  77,  51, 133,  69, 249, 2, 127,  80,  60, 159, 168,
81, 163,  64, 143, 146, 157,  56, 245, 188, 182, 218,  33,  16, 255, 243, 210,
  205,  12,  19, 236,  95, 151,  68,  23, 196, 167, 126,  61, 100,  93,  25, 115,
96, 129,  79, 220,  34,  42, 144, 136,  70, 238, 184,  20, 222,  94,  11, 219,
  224,  50,  58,  10,  73, 6,  36,  92, 194, 211, 172,  98, 145, 149, 228, 121,
  231, 200,  55, 109, 141, 213,  78, 169, 108,  86, 244, 234, 101, 122, 174, 8,
  186, 120,  37,  46,  28, 166, 180, 198, 232, 221, 116,  31,  75, 189, 139, 138,
  112,  62, 181, 102,  72, 3, 246,  14,  97,  53,  87, 185, 134, 193,  29, 158,
  225, 248, 152,  17, 105, 217, 142, 148, 155,  30, 135, 233, 206,  85,  40, 223,
  140, 161, 137,  13, 191, 230,  66, 104,  65, 153,  45,  15, 176,  84, 187,  22,
};

static const unsigned char Si_box[256] = {
82, 9, 106, 213,  48,  54, 165,  56, 191,  64, 163, 158, 129, 243, 215, 251,
  124, 227,  57, 130, 155,  47, 255, 135,  52, 142,  67,  68, 196, 222, 233, 203,
84, 123, 148,  50, 166, 194,  35,  61, 238,  76, 149,  11,  66, 250, 195,  78,
8,  46, 161, 102,  40, 217,  36, 178, 118,  91, 162,  73, 109, 139, 209,  37,
  114, 248, 246, 100, 134, 104, 152,  22, 212, 164,  92, 204,  93, 101, 182, 146,
  108, 112,  72,  80, 253, 237, 185, 218,  94,  21,  70,  87, 167, 141, 157, 132,
  144, 216, 171, 0, 140, 188, 211,  10, 247, 228,  88, 5, 184, 179,  69, 6,
  208,  44,  30, 143, 202,  63,  15, 2, 193, 175, 189, 3, 1,  19, 138, 107,
58, 145,  17,  65,  79, 103, 220, 234, 151, 242, 207, 206, 240, 180, 230, 115,
  150, 172, 116,  34, 231, 173,  53, 133, 226, 249,  55, 232,  28, 117, 223, 110,
71, 241,  26, 113,  29,  41, 197, 137, 111, 183,  98,  14, 170,  24, 190,  27,
  252,  86,  62,  75, 198, 210, 121,  32, 154, 219, 192, 254, 120, 205,  90, 244,
31, 221, 168,  51, 136, 7, 199,  49, 177,  18,  16,  89,  39, 128, 236,  95,
96,  81, 127, 169,  25, 181,  74,  13,  45, 229, 122, 159, 147, 201, 156, 239,
  160, 224,  59,  77, 174,  42, 245, 176, 200, 235, 187,  60, 131,  83, 153,  97,
23,  43, 4, 126, 186, 119, 214,  38, 225, 105,  20,  99,  85,  33,  12, 125,
};

void __stdcall encrypt(unsigned char *pt,unsigned char *secu_key,unsigned char *ept){
unsigned char rcon,i,j,aux,aux1,aux2,aux3,round_counter;
unsigned char key[16],block[16];

for(i=0;i<16;i++)
block = pt;

for(i=0;i<16;i++)
key = secu_key;

rcon = 1 ;

/*key_addition*/
for(i=0;i<16;i++)
   block ^= key;

round_counter = 0xA;

for(j=0;j
/*substitution_S*/
for(i=0;i<16;i++)
block = S_box[block];

/*enc_shift_row*/
aux = block[1];
block[1] = block[5];
block[5] = block[9];
block[9] = block[13];
block[13] = aux;

aux = block[2];
aux1 = block[6];
block[2] = block[10];
block[6] = block[14];
block[10] = aux;
block[14] = aux1;

aux = block[15];
block[15] = block[11];
block[11] = block[7];
block[7] = block[3];
block[3] = aux;

if(j == (round_counter-1)) goto last_round;

/*mix_column*/
/*begins with the mix of column 0*/
aux1 = block[0] ^ block[1];
aux = block[0] ^ block[1] ^ block[2] ^ block[3];
aux2 = block[1] ^ block[2];
aux3 = block[2] ^ block[3];

/*calc_xtimes*/
if(aux1<0x80)
aux1<<= 1;
else
aux1 = (aux1<<1) ^ 0x1b;
if(aux2<0x80)
aux2 <<= 1;
else
aux2 = (aux2<<1) ^ 0x1b;
if(aux3<0x80)
aux3 <<= 1;
else
aux3 = (aux3<<1) ^ 0x1b;

block[0] ^= aux ^ aux1;
block[1] ^= aux ^ aux2;
block[2] ^= aux ^ aux3;
block[3] = block[0] ^ block[1] ^ block[2] ^ aux;

/*mix of column 1*/
aux1 = block[4] ^ block[5];
aux = block[4] ^ block[5] ^ block[6] ^ block[7];
aux2 = block[5] ^ block[6];
aux3 = block[6] ^ block[7];

/*calc_xtimes*/
if(aux1<0x80)
aux1<<= 1;
else
aux1 = (aux1<<1) ^ 0x1b;
if(aux2<0x80)
aux2 <<= 1;
else
aux2 = (aux2<<1) ^ 0x1b;
if(aux3<0x80)
aux3 <<= 1;
else
aux3 = (aux3<<1) ^ 0x1b;

block[4] ^= aux ^ aux1;
block[5] ^= aux ^ aux2;
block[6] ^= aux ^ aux3;
block[7] = block[4] ^ block[5] ^ block[6] ^ aux;

/*mix of column 2*/
aux1 = block[8] ^ block[9];
aux = block[8] ^ block[9] ^ block[10] ^ block[11];
aux2 = block[9] ^ block[10];
aux3 = block[10] ^ block[11];

/*calc_xtimes*/
if(aux1<0x80)
aux1<<= 1;
else
aux1 = (aux1<<1) ^ 0x1b;
if(aux2<0x80)
aux2 <<= 1;
else
aux2 = (aux2<<1) ^ 0x1b;
if(aux3<0x80)
aux3 <<= 1;
else
aux3 = (aux3<<1) ^ 0x1b;

block[8] ^= aux ^ aux1;
block[9] ^= aux ^ aux2;
block[10] ^= aux ^ aux3;
block[11] = block[8] ^ block[9] ^ block[10] ^ aux;

/*mix of column 3*/
aux1 = block[12] ^ block[13];
aux = block[12] ^ block[13] ^ block[14] ^ block[15];
aux2 = block[13] ^ block[14];
aux3 = block[14] ^ block[15];

/*calc_xtimes*/
if(aux1<0x80)
aux1<<= 1;
else
aux1 = (aux1<<1) ^ 0x1b;
if(aux2<0x80)
aux2 <<= 1;
else
aux2 = (aux2<<1) ^ 0x1b;
if(aux3<0x80)
aux3 <<= 1;
else
aux3 = (aux3<<1) ^ 0x1b;

block[12] ^= aux ^ aux1;
block[13] ^= aux ^ aux2;
block[14] ^= aux ^ aux3;
block[15] = block[12] ^ block[13] ^ block[14] ^ aux;

last_round:
/*enc_key_schedule*/
/*calc_s_table_based_values*/
key[0x0] ^= S_box[key[0xD]];
key[0x1] ^= S_box[key[0xE]];
key[0x2] ^= S_box[key[0xF]];
key[0x3] ^= S_box[key[0xC]];

key[0] ^= rcon;

if(rcon<0x80)
rcon <<= 1;
else
rcon = (rcon<<1) ^ 0x1b;

for(i=0;i<12;i++)
key[i+4] ^= key;

/*key_addition*/
for(i=0;i<16;i++)
   block ^= key;
} /*end of encrypt*/

for(i=0;i<16;i++)
ept = block;

}

void __stdcall decrypt(unsigned char *ept,unsigned char *secu_key,unsigned char *pt){
unsigned char key[16],block[16];
unsigned char rcon,i,j,aux,aux1,aux2,aux3,round_counter,d0,d1,d2;

for(i=0;i<16;i++)
block = ept;

for(i=0;i<16;i++)
key = secu_key;

rcon = 1;
round_counter = 10;
for(j=0;j /*enc_key_schedule*/
/*calc_s_table_based_values*/
key[0x0] ^= S_box[key[0xD]];
key[0x1] ^= S_box[key[0xE]];
key[0x2] ^= S_box[key[0xF]];
key[0x3] ^= S_box[key[0xC]];

key[0] ^= rcon;

if(rcon<0x80)
rcon <<= 1;
else
rcon = (rcon<<1) ^ 0x1b;

for(i=0;i<12;i++)
key[i+4] ^= key;
} /*end of init_decryption_key*/

rcon = 0x36;

/*key_addition*/
for(i=0;i<16;i++)
   block ^= key;

round_counter = 10;

/*substitution_Si*/
for(i=0;i<16;i++)
block = Si_box[block];

/*dec_shift_row*/
aux = block[0xd]; /*Rotates right row 1 one position*/
block[0xd] = block[9];
block[9] = block[5];
block[5] = block[1];
block[1] = aux;

aux = block[0xa]; /*Rotates right row 2 one position*/
aux1 = block[0xe];
block[0xa] = block[2];
block[0xe] = block[6];
block[2] = aux;
block[6] = aux1;

aux = block[3]; /*Rotates right row 3 one position*/
block[3] = block[7];
block[7] = block[0xb];
block[0xb] = block[0xf];
block[0xf] = aux;

/*dec_key_schedule*/
/*first column3 ^= column2*/
key[0xc] ^= key[8];
key[0xd] ^= key[9];
key[0xe] ^= key[0xa];
key[0xf] ^= key[0xb];
/*column2 ^= column1*/
key[8] ^= key[4];
key[9] ^= key[5];
key[0xa] ^= key[6];
key[0xb] ^= key[7];
/*first column1 ^= column0*/
key[4] ^= key[0];
key[5] ^= key[1];
key[6] ^= key[2];
key[7] ^= key[3];

key[0] ^= rcon;
if(rcon & 0x1)
rcon = 0x80;
else
rcon >>= 1;

/*calc_s_table_based_values*/
key[0x0] ^= S_box[key[0xD]];
key[0x1] ^= S_box[key[0xE]];
key[0x2] ^= S_box[key[0xF]];
key[0x3] ^= S_box[key[0xC]];

/*key_addition*/
for(i=0;i<16;i++)
   block ^= key;

for(j=0;j<(round_counter-1);j++){
/*inv_mix_column*/
/*FIRST column*/
aux = block[0] ^ block[1] ^ block[2] ^ block[3];

aux1 = block[0] ^ block[2];
if(aux1<0x80)
aux1 <<= 1;
else
aux1 = (aux1<<1) ^ 0x1b;

aux2 = block[1] ^ block[3];
if(aux2<0x80)
aux2 <<= 1;
else
aux2 = (aux2<<1) ^ 0x1b;

aux3 = aux1 ^ aux2;
if(aux3<0x80)
aux3 <<= 1;
else
aux3 = (aux3<<1) ^ 0x1b;
if(aux3<0x80)
aux3 <<= 1;
else
aux3 = (aux3<<1) ^ 0x1b;

aux3 ^= aux;

d0 = block[0] ^ block[1] ^ aux1;
if(d0<0x80)
d0 <<= 1;
else
d0 = (d0<<1) ^ 0x1b;

d1 = block[1] ^ block[2] ^ aux2;
if(d1<0x80)
d1 <<= 1;
else
d1 = (d1<<1) ^ 0x1b;

d2 = block[2] ^ block[3] ^ aux1;
if(d2<0x80)
d2 <<= 1;
else
d2 = (d2<<1) ^ 0x1b;

block[0] ^= d0 ^ aux3;
block[1] ^= d1 ^ aux3;
block[2] ^= d2 ^ aux3;
block[3] = block[0] ^ block[1] ^ block[2] ^ aux;

/*SECOND column*/
aux = block[4] ^ block[5] ^ block[6] ^ block[7];

aux1 = block[4] ^ block[6];
if(aux1<0x80)
aux1 <<= 1;
else
aux1 = (aux1<<1) ^ 0x1b;

aux2 = block[5] ^ block[7];
if(aux2<0x80)
aux2 <<= 1;
else
aux2 = (aux2<<1) ^ 0x1b;

aux3 = aux1 ^ aux2;
if(aux3<0x80)
aux3 <<= 1;
else
aux3 = (aux3<<1) ^ 0x1b;
if(aux3<0x80)
aux3 <<= 1;
else
aux3 = (aux3<<1) ^ 0x1b;

aux3 ^= aux;

d0 = block[4] ^ block[5] ^ aux1;
if(d0<0x80)
d0 <<= 1;
else
d0 = (d0<<1) ^ 0x1b;

d1 = block[5] ^ block[6] ^ aux2;
if(d1<0x80)
d1 <<= 1;
else
d1 = (d1<<1) ^ 0x1b;

d2 = block[6] ^ block[7] ^ aux1;
if(d2<0x80)
d2 <<= 1;
else
d2 = (d2<<1) ^ 0x1b;

block[4] ^= d0 ^ aux3;
block[5] ^= d1 ^ aux3;
block[6] ^= d2 ^ aux3;
block[7] = block[4] ^ block[5] ^ block[6] ^ aux;

/*THIRD column*/
aux = block[8] ^ block[9] ^ block[10] ^ block[11];

aux1 = block[8] ^ block[10];
if(aux1<0x80)
aux1 <<= 1;
else
aux1 = (aux1<<1) ^ 0x1b;

aux2 = block[9] ^ block[11];
if(aux2<0x80)
aux2 <<= 1;
else
aux2 = (aux2<<1) ^ 0x1b;

aux3 = aux1 ^ aux2;
if(aux3<0x80)
aux3 <<= 1;
else
aux3 = (aux3<<1) ^ 0x1b;
if(aux3<0x80)
aux3 <<= 1;
else
aux3 = (aux3<<1) ^ 0x1b;

aux3 ^= aux;

d0 = block[8] ^ block[9] ^ aux1;
if(d0<0x80)
d0 <<= 1;
else
d0 = (d0<<1) ^ 0x1b;

d1 = block[9] ^ block[10] ^ aux2;
if(d1<0x80)
d1 <<= 1;
else
d1 = (d1<<1) ^ 0x1b;

d2 = block[10] ^ block[11] ^ aux1;
if(d2<0x80)
d2 <<= 1;
else
d2 = (d2<<1) ^ 0x1b;

block[8] ^= d0 ^ aux3;
block[9] ^= d1 ^ aux3;
block[10] ^= d2 ^ aux3;
block[11] = block[8] ^ block[9] ^ block[10] ^ aux;

/*LAST column*/
aux = block[12] ^ block[13] ^ block[14] ^ block[15];

aux1 = block[12] ^ block[14];
if(aux1<0x80)
aux1 <<= 1;
else
aux1 = (aux1<<1) ^ 0x1b;

aux2 = block[13] ^ block[15];
if(aux2<0x80)
aux2 <<= 1;
else
aux2 = (aux2<<1) ^ 0x1b;

aux3 = aux1 ^ aux2;
if(aux3<0x80)
aux3 <<= 1;
else
aux3 = (aux3<<1) ^ 0x1b;
if(aux3<0x80)
aux3 <<= 1;
else
aux3 = (aux3<<1) ^ 0x1b;

aux3 ^= aux;

d0 = block[12] ^ block[13] ^ aux1;
if(d0<0x80)
d0 <<= 1;
else
d0 = (d0<<1) ^ 0x1b;

d1 = block[13] ^ block[14] ^ aux2;
if(d1<0x80)
d1 <<= 1;
else
d1 = (d1<<1) ^ 0x1b;

d2 = block[14] ^ block[15] ^ aux1;
if(d2<0x80)
d2 <<= 1;
else
d2 = (d2<<1) ^ 0x1b;

block[12] ^= d0 ^ aux3;
block[13] ^= d1 ^ aux3;
block[14] ^= d2 ^ aux3;
block[15] = block[12] ^ block[13] ^ block[14] ^ aux;

dec_first_round:
/*substitution_Si*/
for(i=0;i<16;i++)
block = Si_box[block];

/*dec_shift_row*/
aux = block[0xd]; /*Rotates right row 1 one position*/
block[0xd] = block[9];
block[9] = block[5];
block[5] = block[1];
block[1] = aux;

aux = block[0xa]; /*Rotates right row 2 one position*/
aux1 = block[0xe];
block[0xa] = block[2];
block[0xe] = block[6];
block[2] = aux;
block[6] = aux1;

aux = block[3]; /*Rotates right row 3 one position*/
block[3] = block[7];
block[7] = block[0xb];
block[0xb] = block[0xf];
block[0xf] = aux;

/*dec_key_schedule*/
/*first column3 ^= column2*/
key[0xc] ^= key[8];
key[0xd] ^= key[9];
key[0xe] ^= key[0xa];
key[0xf] ^= key[0xb];
/*column2 ^= column1*/
key[8] ^= key[4];
key[9] ^= key[5];
key[0xa] ^= key[6];
key[0xb] ^= key[7];
/*first column1 ^= column0*/
key[4] ^= key[0];
key[5] ^= key[1];
key[6] ^= key[2];
key[7] ^= key[3];

key[0] ^= rcon;
if(rcon & 0x1)
rcon = 0x80;
else
rcon >>= 1;

/*calc_s_table_based_values*/
key[0x0] ^= S_box[key[0xD]];
key[0x1] ^= S_box[key[0xE]];
key[0x2] ^= S_box[key[0xF]];
key[0x3] ^= S_box[key[0xC]];

/*key_addition*/
for(i=0;i<16;i++)
   block ^= key;
} /*end of for loop*/

for(i=0;i<16;i++)
pt = block;
} /*end of decrypt*/

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